ATmega1281R231 Atmel Corporation, ATmega1281R231 Datasheet - Page 4

• Manufacturer Part Number: ATmega1281R231
• Manufacturer: Atmel Corporation

Specifications of ATmega1281R231

• Flash (kbytes): 128 Kbytes
• Max. Operating Frequency: 16 MHz
• Max I/o Pins: 54
• Spi: 3
• Twi (i2c): 1
• Uart: 2
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 15
• Analog Comparators: 1
• Crypto Engine: AES
• Sram (kbytes): 8
• Eeprom (bytes): 4096
• Operating Voltage (vcc): 1.8 to 3.6
• Timers: 6
• Frequency Band: 2.4 GHz
• Max Data Rate (mb/s): 2
• Antenna Diversity: Yes
• External Pa Control: Yes
• Power Output (dbm): 3
• Receiver Sensitivity (dbm): -101
• Receive Current Consumption (ma): 13.2
• Transmit Current Consumption (ma): 14.4
• Link Budget (dbm): 104

Figure 1-3.
2549NS–AVR–05/11
(RXD0/PCINT8/PDI) PE0
(ICP3/CLKO/INT7) PE7
(OC2A/ PCINT4) PB4
(MOSI/ PCINT2) PB2
(MISO/ PCINT3) PB3
(OC1A/PCINT5) PB5
(OC1B/PCINT6) PB6
(SCK/ PCINT1) PB1
(OC3A/AIN1) PE3
(OC3C/INT5) PE5
(SS/PCINT0) PB0
(OC3B/INT4) PE4
(XCK0/AIN0) PE2
(TXD0/PDO) PE1
(T3/INT6) PE6
Pinout ATmega1281/2561
(OC0B) PG5
Note:
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
The large center pad underneath the QFN/MLF package is made of metal and internally con-
nected to GND. It should be soldered or glued to the board to ensure good mechanical stability. If
the center pad is left unconnected, the package might loosen from the board.
INDEX CORNER
ATmega640/1280/1281/2560/2561
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
PA3 (AD3)
PA4 (AD4)
PA5 (AD5)
PA6 (AD6)
PA7 (AD7)
PG2 (ALE)
PC7 (A15)
PC6 (A14)
PC5 (A13)
PC4 (A12)
PC3 (A11)
PC2 (A10)
PC1 (A9)
PC0 (A8)
PG1 (RD)
PG0 (WR)
4